AoE4 likely to have been in production at least since Sep 2016 as suggested by former Relic dev CV

Age of Empires IV IV - Discussion
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Credits go to reddit user frycry66 for the find:

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A new Age will be upon us soon! :heart_eyes:

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Maybe the new feature is a commander tree type of tech system like from COH2, based off from mythology as you progress in ages, were you could choose from multiple different types generals to customize each nation in various different ways… just a thought :thinking:

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